Machine for making tubes.



0. P. JENKINS. lJIAGHINE FOR MAKING TUBES. APPLICATION FILED JULY 23,1908.

Patented July 12, 1910.

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A EN Ynnon.

" IGA, A. CORPORATION OF NEW JERSE eronfmsrnrcr or COLUMBIA, ASSIGNOR, nnvrcn PACKAGE CORPORATION or AMER- memes manure TUBES;

Toall whom it may concern: A I a 1 Be it known that I, CHARLEs'FRANoIs JENKINS, a citizen of siding at Washington, in the District of Columbia, have invented certain new and p, useful Improvements in 'ing Tubes,

the United States, re-

Machines for Makof which the following is'a specification, reference being had therein to the drawing.

tubes,

stook without the use of a mandrel, and ,to

, [provide automatic devices for cutting such '15, tubes into desired lengths while theyare bejing advanced by. the

rming mechanism. f In the accompanying is a plan view of those arts 'ofthe machine ig. 2 is a section on the line'2-2, Fig. 1'; Fig. 3 is asection on the'line 3-3 Fig. l.

for example, '25 b 'shaft C having at its end a Between the 111 these figures A represents a suitably mounted shaft driven by'any suitable means, a belt pulley A. This shaft y means of gears B B" drives a parallel fork C in which is revolubl mounted a transverse spoolD to carry a lieavy stock strip E, wide enough to form, when laterally-rolled, a tube E of a desired size. 'Thes'haft A also drives by means of spiral gears. F, or other suitable ears G, shaft G gears-G two ,4 G carrying a common stripone fol or bight ,G 'midway between the end planes of the spool D and preferably also approximatelyin a plane tangent to that s 001. spool and said bight are xed two smooth rings, H, H at some distance apart, the smaller and more distant from the .spool .havin .-its inner diameter approximately equa to that of the inner layer of the tube to be formed. The free-end of the strip E being drawn out and rolled laterally to tubular form is' passed through the two rings and the bight of the belt. 'A nar-f row, preferably thin stock strip X mounted on an oblique s 001 I is drawn forward over a gumming rol and is wound closely around the foundation tube E and has its end caught under that portion of the belt forming the bight. If

now-the power shaft be rotated the entire Specification of Letters Patent. Application nledu'uly 2a, 1908. semi in. 444,945.

drawings Figure 1 .which,urges the motor away e periphery of the cam is unequallydis- J mounted in a receptacle .T'

' stock is automaticallyformed into a twoply tube, the rings continually forming-the inner or foundatlon layer and the bight of thebelt continually drawing out and winding thereon the gummed strip and at the same time'feeding forward the formed tube.

The formed tube, is held against the slight lateral pull of thebelt by means of'rollers -'K,andifth'e 'The leading objectsofthis invention are for making ontinuous. especially papertubes, from sheet inner layer is stiff enoughv to withstand moderate compression, the oper' ationis entirely successful.

PatentedJuly' 12, 1910.

For certain purposes, it is desirableto cut the advancing completed tube into short segments, and this is-done by a small electric motor L having its shaft parallel to the tube and bearin upon its rojecting portion a rotary, 'pre erably toot ed cutter. L. The motor is mounted-upon a support L hinged at L by a gimbal joint to swing .toward and away from the tube to carry the cutter into and out of contact, and also to swing in Both moveproper times by a and a spring 0, from the tube.

planes parallel to the tube. ments are produced at cam N upon the shaft tant from theshaft and as it rotates it pushes the same into action, while the spring draws it out of action as ermits. The cams margin rotates between ugs P upon the-motor and lateral bends-in the cam force the motor to swing with the advancing tube,.while the cutteris in action, and to move in the cutter is out of action.

It is to be observed that the several parts are so-proportioned that the bodily rotation of the spool D is at the same rate as the rotation of the tube by the bight ofthe' belt, and

that in the particular machine illustrated the'cutter operates once in each revolution of the shaft A, and still further it may be noted that by using the independent cutter soon as the cam the contrary direction when u motor a relatively Very high speed of the I cutter may be maintained. What I claini is; 1. The combination with an endless .belt

having in one fold a bight adapted to wind a stock strip spirally upon a foundation tube lying in the bight and to draw forward the compound tube so formed, of a second axially rotatable stock strip, and means acting u on one face only of the second strip. to rol it -1aterally as it advances toward said bight, into an'internally unobstructed foundation tube and to resist its lateral displacement. v

2. The combination with a strip carrying spool mounted to rotate upon its own axis and upon an axis perpendicular theret0,'of

a fixed former.ring, larger than the proposed tube,--in the line of the second axis, a

second fixed former ring more distant from .the spool and adapted to' compress therolled strip comingthrough the first ring until, its

edges abutting, it orms a foundation tube,

means for supplying a, glued covering strip obliquely to the foundation tube, an endless belt having one fold passing around the covered tube, means for causing said belt to rotate and advance the covered tube, and

means for rotating the spool upon its second,

axis at the speed of thetubes rotation.

The combination with a strip carrying spool mounted to rotate'upon its own axis and about a second axis perpendicular thereto, means for rotating'the spool about the second axis, a fixed ring for laterally rolling the strip coming from the spool to form a foundation tube, an oblique endless belt.

having a bight of one fold passing around the internally unsupported foundation tube,-

the lateral pull of the belt upon the tube e11 means for driving the belt at a speed corresponding to the speed of rotation about said second axis.

4. The combination with means for form- I 'through an equal distance.

ing a tube and c continuously adva it longitudinally, of an electric motor mounted,'with its shaft parallel to the path of the tube, to .move parallel to the tube and to and from the same, a power shaft, a tube cutter mounted on the motor shaft, and a cam car ried b the power shaft, engaging the motor,

- and e apted by its form to compel the motor to move" periodically toward the tube, ac-

company its advance through a predeter through anequal distance.

5. The combination with a shaft having a transverse strip carrying spool revolu 17 mounted upon its free end, a strip rolling mined distance and to "move; oppositely device in positionto roll laterally to tubular I form the strip drawn from said spool, means 7 for wrappin a gummedstrip spirally about the internal y unsupported spirally rolled strip, a cutter carrying motor alongside the path of the wrapped"structure, a'power shaft, means, whereby'thef power shaft rotates the shaft first mentioned, means whereby it aotuates the wrapping and p a, cam borne bythe power shaft engaging said motor and adapted to com el the motor to approach the tube periodica 1y to accompany its advance through a predetermined distance, andjto move in a contrary In testimon "whereof I- ifix m signature 'in presence o 'two witnesses,

CHARLES FRANCIS JENKINS.

.Witnesses:v

BEATRICE DAILEY, JEssn GREEN.

directi on 

